1) How many milliliters of the approximately 0.15 M prepared copper (Il) sulfate stock solution are needed to prepare 100.00 milliliters of a 0.015 M copper(Il) sulfate solution?
To find out how many milliliters of the 0.15 M copper (II) sulfate stock solution are needed to prepare 100.00 milliliters of a 0.015 M copper (II) sulfate solution, we can use the formula:
C1V1 = C2V2
Where:
C1 = concentration of stock solution (0.15 M)
V1 = volume of stock solution to be used
C2 = desired concentration (0.015 M)
V2 = final volume of solution (100.00 mL)
Plugging in the values, we get:
(0.15 M)V1 = (0.015 M)(100.00 mL)
V1 = (0.015 M * 100.00 mL) / 0.15 M
V1 = 10.00 mL
Therefore, approximately 10.00 milliliters of the 0.15 M copper (II) sulfate stock solution are needed to prepare 100.00 milliliters of a 0.015 M copper (II) sulfate solution.